{
{    The purpose of this request is to cancel an offer to switch ownership of a
{  CDNA connection end point to another job executing on the local system.
{
{    Switching ownership of a connection end point is a cooperative process
{  which requires the active participation of both the source job (current
{  owner) and the destination job (proposed owner).  The source job makes an
{  offer to switch a connection end point to a destination job.  The destination
{  job accepts this switch offer to complete the connection end point switch.
{
{    This request is used by a source job to retract a switch offer which has
{  not been accepted by the destination job within a reasonable amount of time.
{
{    Note that this request may be made in a task other than the one which made
{  the switch offer -- but both tasks must execute in the same job.
{
{        NAP$CANCEL_SWITCH_OFFER (FILE, STATUS)
{
{  FILE: (input) This parameter specifies the name of the network file which
{        identifies the connection end point for which a switch of ownership has
{        been offered.
{
{  STATUS: (output) This parameter specifies the request status.
{        CONDITIONS:
{              ame$file_not_known
{              ame$improper_device_class
{              nae$no_switch_offer_pending
{              nae$switch_offer_accepted
{              {other BAM conditions}
{
